Figure 2
From: Modes of carbon fixation in an arsenic and CO2-rich shallow hydrothermal ecosystem
Principal Component Analysis (PCA) for Raman spectroscopy mineralogical data, showing same habitat samples clustering together, except for S–S4. The first letter: W, B or S refers to white-capped, brown-capped and reference sand sediments, respectively. S1 represents 0–2 cm, S3 = 3–4 cm, S4 = 6–8 cm, S7 = 12–14 cm, S8 = 14–16 cm and S10 = 18–20 cm.
